I don't usually like posts that just link to an external resource, but Nomad List is a (free) search engine built for this exact use case. They have both domestic and international cities.
The same guy that created that also recently made a second project of crowdsourced neighborhood characteristics within each city. For example, if you want to find where the tech or hipster neighborhood in a given city is.
"What are the best cities with affordable housing that are big enough to have a good variety of food and no (or a very mild) winter that have enough of a tech community for some meetups, etc?"
You can rank/sort by more long-term attributes like quality of life, rent price etc. Property taxes are too granular data to collect for me and impossible to keep up-to-date for 1,000+ cities though.
I think it's mostly focused on short-term living (digital nomads). It may be worth contacting the creator on Twitter. I'm sure it's not the first time he's had that type of request.
https://nomadlist.com/
The same guy that created that also recently made a second project of crowdsourced neighborhood characteristics within each city. For example, if you want to find where the tech or hipster neighborhood in a given city is.
https://hoodmaps.com/
For example, SF:
https://hoodmaps.com/san-francisco